* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,body {
    height: 100%;
    background-image: url('../image/789.JPG');
    background-repeat: no-repeat;
    background-position:center top;
    /* 尽可能的铺满 */
    background-size:cover;
}

.nav {
    width: 100%;
    height: 50px;
    background-color: rgba(50, 50, 50,0.4);
    color: rgb(255, 255, 255);

    display: flex;
    align-items: center;
}

.nav img {
    width: 40px;
    height: 40px;
    border-radius: 20px;
    margin-left: 30px;
    margin-right: 10px;
}

.nav .spacer {
    width: 70%;
}

.nav a {
    color: rgb(255, 255, 255);
    text-decoration: none;
    padding: 0 10px;
}

.container {
    width: 1000px;
    height: calc(100% - 50px);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}

.container-left {
    height: 100%;
    width: 200px;

}

.container-right {
    height: 100%;
    width: 795px;
    background-color: rgba(255, 255, 255,0.8);
    border-radius: 10px;
    overflow: auto;
}

.card {
    background-color: rgba(255, 255, 255,0.8);
    border-radius: 20px;
    /* 设置全边距30px */
    padding: 30px;
}

.card img{
    width: 140px;
    height: 140px;
    border-radius: 70px;
}

.card h3 {
    text-align: center;
    padding: 10px;
}

.card a {
    display: block;
    text-align: center;
    padding: 10px;
    text-decoration: none;
    color: #aaa;
}

.card .counter {
    display: flex;
    padding: 5px;
    justify-content: space-around;
}

